We propose a fast calculation method to synthesize a computer-generated hologram (CGH) of realistic deep three-dimensional
(3D) scene. In our previous study, we have proposed a calculation method of CGH for reproducing such scene
called ray-sampling-plane (RSP) method, in which light-ray information of a scene is converted to wavefront, and the
wavefront is numerically propagated based on diffraction theory. In this paper, we introduce orthographic projection to the
RSP method for accelerating calculation time. By numerical experiments, we verified the accelerated calculation with the
ratio of 28-times compared to the conventional RSP method. The calculated CGH was fabricated by the printing system
using laser lithography and demonstrated deep 3D image reconstruction in 52mm×52mm with realistic appearance effect
such as gloss and translucent effect.
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Shunsuke Igarashi ; Tomoya Nakamura ; Kyoji Matsushima and Masahiro Yamaguchi
Efficient calculation method for realistic deep 3D scene hologram using orthographic projection
", Proc. SPIE 9771, Practical Holography XXX: Materials and Applications, 97710O (March 7, 2016); doi:10.1117/12.2212301; http://dx.doi.org/10.1117/12.2212301